This document describes systems and techniques for improving the integrity and protecting the security of information in content selection and distribution. In one aspect, a method includes receiving, by a first server of a secure multi-party computation (MFC) system from an application on a user device, a request for a digital component. The request is parsed into distinct sub-requests. Each sub-request is transmitted to a different server. A set of candidate selection values is received from a separate server. The first server performs, in collaboration with one or more second servers of the MFC system, a selection process to generate a selection result for a winning digital component, including merging, the first set of candidate selection values and a set of cached selection values to create a final set of candidate selection values and sorting the final set according to the values of the candidate selection values.
Legal claims defining the scope of protection, as filed with the USPTO.
3. The method of claim 2, wherein the notification comprising data indicating that the winning digital component was presented at the user device is received by the first server of the secure MPC system with a second request for a second selection value.
5. The method of claim 1, wherein receiving the first set of candidate selection values comprises receiving, from the separate server, at least two secret shares for each candidate selection value of a first set of candidate selection values.
6. The method of claim 5, wherein the merging and the sorting can be performed by the first server as a single comparison-based sorting process.
7. The method of claim 1, wherein the set of selection rules comprises at least a privacy-preserving anonymity enforcement rule.
10. The system of claim 9, wherein the notification comprising data indicating that the winning digital component was presented at the user device is received by the first server of the secure MPC system with a second request for a second selection value.
12. The system of claim 8, wherein receiving the first set of candidate selection values comprises receiving, from the separate server, at least two secret shares for each candidate selection value of a first set of candidate selection values.
13. The system of claim 12, wherein the merging and the sorting can be performed by the first server as a single comparison-based sorting process.
14. The system of claim 8, wherein the set of selection rules comprises at least a privacy-preserving anonymity enforcement rule.
17. The computer storage medium of claim 16, wherein the notification comprising data indicating that the winning digital component was presented at the user device is received by the first server of the secure MPC system with a second request for a second selection value.
19. The computer storage medium of claim 15, wherein receiving the first set of candidate selection values comprises receiving, from the separate server, at least two secret shares for each candidate selection value of a first set of candidate selection values.
20. The computer storage medium of claim 19, wherein the merging and the sorting can be performed by the first server as a single comparison-based sorting process.
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October 11, 2021
July 2, 2024
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